gecko-dev/build/bloatcycle.html

<script>
// bloat test driver for TestGtkEmbed
//
// set |user_pref("dom.allow_scripts_to_close_windows", true);| to 
// allow this to close the window when the loop is done.
//
//     "ftp://ftp.mozilla.org",   // not supported for TestGtkEmbed
//
var list = 
    [
     "http://www.mozilla.org",
     "http://www.mozilla.org",
     "http://www.mozilla.org/newlayout/samples/test2.html",
     "http://www.mozilla.org/newlayout/samples/test8.html",
     "http://www.mozilla.org/newlayout/samples/test6.html",
     "http://www.mozilla.org/newlayout/samples/test8.html"
    ];
var interval = 3000; // 15000
var idx = 0;
var w;

window.onload = function () {
    w = window.open("about:blank");
    window.setTimeout(loadURL, interval); 
};
function loadURL () {
    w.location.href = list[idx++];
    if (list[idx]) {
	window.setTimeout(loadURL, interval);
    } else {
    window.setTimeout("w.close();", interval);
	window.setTimeout("window.close();", interval);
    }
}
    var i;
    for(i=0;i<6;i++) {
      document.write(list[i]);
      document.write("<br>");
    }
</script>